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path: root/drivers/net/usb/smsc95xx.c
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Diffstat (limited to 'drivers/net/usb/smsc95xx.c')
-rw-r--r--drivers/net/usb/smsc95xx.c343
1 files changed, 220 insertions, 123 deletions
diff --git a/drivers/net/usb/smsc95xx.c b/drivers/net/usb/smsc95xx.c
index 362cb8cfeb9..e083f537113 100644
--- a/drivers/net/usb/smsc95xx.c
+++ b/drivers/net/usb/smsc95xx.c
@@ -26,6 +26,8 @@
#include <linux/ethtool.h>
#include <linux/mii.h>
#include <linux/usb.h>
+#include <linux/bitrev.h>
+#include <linux/crc16.h>
#include <linux/crc32.h>
#include <linux/usb/usbnet.h>
#include <linux/slab.h>
@@ -46,7 +48,8 @@
#define SMSC95XX_INTERNAL_PHY_ID (1)
#define SMSC95XX_TX_OVERHEAD (8)
#define SMSC95XX_TX_OVERHEAD_CSUM (12)
-#define SUPPORTED_WAKE (WAKE_MAGIC)
+#define SUPPORTED_WAKE (WAKE_UCAST | WAKE_BCAST | \
+ WAKE_MCAST | WAKE_ARP | WAKE_MAGIC)
#define check_warn(ret, fmt, args...) \
({ if (ret < 0) netdev_warn(dev->net, fmt, ##args); })
@@ -63,80 +66,98 @@ struct smsc95xx_priv {
u32 hash_lo;
u32 wolopts;
spinlock_t mac_cr_lock;
-};
-
-struct usb_context {
- struct usb_ctrlrequest req;
- struct usbnet *dev;
+ int wuff_filter_count;
};
static bool turbo_mode = true;
module_param(turbo_mode, bool, 0644);
MODULE_PARM_DESC(turbo_mode, "Enable multiple frames per Rx transaction");
-static int __must_check smsc95xx_read_reg(struct usbnet *dev, u32 index,
- u32 *data)
+static int __must_check __smsc95xx_read_reg(struct usbnet *dev, u32 index,
+ u32 *data, int in_pm)
{
- u32 *buf = kmalloc(4, GFP_KERNEL);
+ u32 buf;
int ret;
+ int (*fn)(struct usbnet *, u8, u8, u16, u16, void *, u16);
BUG_ON(!dev);
- if (!buf)
- return -ENOMEM;
-
- ret = usb_control_msg(dev->udev, usb_rcvctrlpipe(dev->udev, 0),
- USB_VENDOR_REQUEST_READ_REGISTER,
- USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- 00, index, buf, 4, USB_CTRL_GET_TIMEOUT);
+ if (!in_pm)
+ fn = usbnet_read_cmd;
+ else
+ fn = usbnet_read_cmd_nopm;
+ ret = fn(dev, USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN
+ | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 0, index, &buf, 4);
if (unlikely(ret < 0))
- netdev_warn(dev->net, "Failed to read register index 0x%08x\n", index);
+ netdev_warn(dev->net,
+ "Failed to read reg index 0x%08x: %d", index, ret);
- le32_to_cpus(buf);
- *data = *buf;
- kfree(buf);
+ le32_to_cpus(&buf);
+ *data = buf;
return ret;
}
-static int __must_check smsc95xx_write_reg(struct usbnet *dev, u32 index,
- u32 data)
+static int __must_check __smsc95xx_write_reg(struct usbnet *dev, u32 index,
+ u32 data, int in_pm)
{
- u32 *buf = kmalloc(4, GFP_KERNEL);
+ u32 buf;
int ret;
+ int (*fn)(struct usbnet *, u8, u8, u16, u16, const void *, u16);
BUG_ON(!dev);
- if (!buf)
- return -ENOMEM;
-
- *buf = data;
- cpu_to_le32s(buf);
+ if (!in_pm)
+ fn = usbnet_write_cmd;
+ else
+ fn = usbnet_write_cmd_nopm;
- ret = usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
- USB_VENDOR_REQUEST_WRITE_REGISTER,
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
- 00, index, buf, 4, USB_CTRL_SET_TIMEOUT);
+ buf = data;
+ cpu_to_le32s(&buf);
+ ret = fn(dev, USB_VENDOR_REQUEST_WRITE_REGISTER, USB_DIR_OUT
+ | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
+ 0, index, &buf, 4);
if (unlikely(ret < 0))
- netdev_warn(dev->net, "Failed to write register index 0x%08x\n", index);
-
- kfree(buf);
+ netdev_warn(dev->net,
+ "Failed to write reg index 0x%08x: %d", index, ret);
return ret;
}
+static int __must_check smsc95xx_read_reg_nopm(struct usbnet *dev, u32 index,
+ u32 *data)
+{
+ return __smsc95xx_read_reg(dev, index, data, 1);
+}
+
+static int __must_check smsc95xx_write_reg_nopm(struct usbnet *dev, u32 index,
+ u32 data)
+{
+ return __smsc95xx_write_reg(dev, index, data, 1);
+}
+
+static int __must_check smsc95xx_read_reg(struct usbnet *dev, u32 index,
+ u32 *data)
+{
+ return __smsc95xx_read_reg(dev, index, data, 0);
+}
+
+static int __must_check smsc95xx_write_reg(struct usbnet *dev, u32 index,
+ u32 data)
+{
+ return __smsc95xx_write_reg(dev, index, data, 0);
+}
static int smsc95xx_set_feature(struct usbnet *dev, u32 feature)
{
if (WARN_ON_ONCE(!dev))
return -EINVAL;
- cpu_to_le32s(&feature);
-
- return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
- USB_REQ_SET_FEATURE, USB_RECIP_DEVICE, feature, 0, NULL, 0,
- USB_CTRL_SET_TIMEOUT);
+ return usbnet_write_cmd_nopm(dev, USB_REQ_SET_FEATURE,
+ USB_RECIP_DEVICE, feature, 0,
+ NULL, 0);
}
static int smsc95xx_clear_feature(struct usbnet *dev, u32 feature)
@@ -144,11 +165,9 @@ static int smsc95xx_clear_feature(struct usbnet *dev, u32 feature)
if (WARN_ON_ONCE(!dev))
return -EINVAL;
- cpu_to_le32s(&feature);
-
- return usb_control_msg(dev->udev, usb_sndctrlpipe(dev->udev, 0),
- USB_REQ_CLEAR_FEATURE, USB_RECIP_DEVICE, feature, 0, NULL, 0,
- USB_CTRL_SET_TIMEOUT);
+ return usbnet_write_cmd_nopm(dev, USB_REQ_CLEAR_FEATURE,
+ USB_RECIP_DEVICE, feature,
+ 0, NULL, 0);
}
/* Loop until the read is completed with timeout
@@ -350,60 +369,20 @@ static int smsc95xx_write_eeprom(struct usbnet *dev, u32 offset, u32 length,
return 0;
}
-static void smsc95xx_async_cmd_callback(struct urb *urb)
-{
- struct usb_context *usb_context = urb->context;
- struct usbnet *dev = usb_context->dev;
- int status = urb->status;
-
- check_warn(status, "async callback failed with %d\n", status);
-
- kfree(usb_context);
- usb_free_urb(urb);
-}
-
static int __must_check smsc95xx_write_reg_async(struct usbnet *dev, u16 index,
u32 *data)
{
- struct usb_context *usb_context;
- int status;
- struct urb *urb;
const u16 size = 4;
+ int ret;
- urb = usb_alloc_urb(0, GFP_ATOMIC);
- if (!urb) {
- netdev_warn(dev->net, "Error allocating URB\n");
- return -ENOMEM;
- }
-
- usb_context = kmalloc(sizeof(struct usb_context), GFP_ATOMIC);
- if (usb_context == NULL) {
- netdev_warn(dev->net, "Error allocating control msg\n");
- usb_free_urb(urb);
- return -ENOMEM;
- }
-
- usb_context->req.bRequestType =
- USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_DEVICE;
- usb_context->req.bRequest = USB_VENDOR_REQUEST_WRITE_REGISTER;
- usb_context->req.wValue = 00;
- usb_context->req.wIndex = cpu_to_le16(index);
- usb_context->req.wLength = cpu_to_le16(size);
-
- usb_fill_control_urb(urb, dev->udev, usb_sndctrlpipe(dev->udev, 0),
- (void *)&usb_context->req, data, size,
- smsc95xx_async_cmd_callback,
- (void *)usb_context);
-
- status = usb_submit_urb(urb, GFP_ATOMIC);
- if (status < 0) {
- netdev_warn(dev->net, "Error submitting control msg, sts=%d\n",
- status);
- kfree(usb_context);
- usb_free_urb(urb);
- }
-
- return status;
+ ret = usbnet_write_cmd_async(dev, USB_VENDOR_REQUEST_WRITE_REGISTER,
+ USB_DIR_OUT | USB_TYPE_VENDOR |
+ USB_RECIP_DEVICE,
+ 0, index, data, size);
+ if (ret < 0)
+ netdev_warn(dev->net, "Error write async cmd, sts=%d\n",
+ ret);
+ return ret;
}
/* returns hash bit number for given MAC address
@@ -765,7 +744,7 @@ static int smsc95xx_start_tx_path(struct usbnet *dev)
}
/* Starts the Receive path */
-static int smsc95xx_start_rx_path(struct usbnet *dev)
+static int smsc95xx_start_rx_path(struct usbnet *dev, int in_pm)
{
struct smsc95xx_priv *pdata = (struct smsc95xx_priv *)(dev->data[0]);
unsigned long flags;
@@ -775,7 +754,7 @@ static int smsc95xx_start_rx_path(struct usbnet *dev)
pdata->mac_cr |= MAC_CR_RXEN_;
spin_unlock_irqrestore(&pdata->mac_cr_lock, flags);
- ret = smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr);
+ ret = __smsc95xx_write_reg(dev, MAC_CR, pdata->mac_cr, in_pm);
check_warn_return(ret, "Failed to write MAC_CR: %d\n", ret);
return 0;
@@ -994,7 +973,7 @@ static int smsc95xx_reset(struct usbnet *dev)
ret = smsc95xx_start_tx_path(dev);
check_warn_return(ret, "Failed to start TX path");
- ret = smsc95xx_start_rx_path(dev);
+ ret = smsc95xx_start_rx_path(dev, 0);
check_warn_return(ret, "Failed to start RX path");
netif_dbg(dev, ifup, dev->net, "smsc95xx_reset, return 0\n");
@@ -1017,6 +996,7 @@ static const struct net_device_ops smsc95xx_netdev_ops = {
static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
{
struct smsc95xx_priv *pdata = NULL;
+ u32 val;
int ret;
printk(KERN_INFO SMSC_CHIPNAME " v" SMSC_DRIVER_VERSION "\n");
@@ -1047,6 +1027,15 @@ static int smsc95xx_bind(struct usbnet *dev, struct usb_interface *intf)
/* Init all registers */
ret = smsc95xx_reset(dev);
+ /* detect device revision as different features may be available */
+ ret = smsc95xx_read_reg(dev, ID_REV, &val);
+ check_warn_return(ret, "Failed to read ID_REV: %d\n", ret);
+ val >>= 16;
+ if ((val == ID_REV_CHIP_ID_9500A_) || (val == ID_REV_CHIP_ID_9512_))
+ pdata->wuff_filter_count = LAN9500A_WUFF_NUM;
+ else
+ pdata->wuff_filter_count = LAN9500_WUFF_NUM;
+
dev->net->netdev_ops = &smsc95xx_netdev_ops;
dev->net->ethtool_ops = &smsc95xx_ethtool_ops;
dev->net->flags |= IFF_MULTICAST;
@@ -1066,6 +1055,11 @@ static void smsc95xx_unbind(struct usbnet *dev, struct usb_interface *intf)
}
}
+static u16 smsc_crc(const u8 *buffer, size_t len, int filter)
+{
+ return bitrev16(crc16(0xFFFF, buffer, len)) << ((filter % 2) * 16);
+}
+
static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message)
{
struct usbnet *dev = usb_get_intfdata(intf);
@@ -1081,50 +1075,153 @@ static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message)
netdev_info(dev->net, "entering SUSPEND2 mode");
/* disable energy detect (link up) & wake up events */
- ret = smsc95xx_read_reg(dev, WUCSR, &val);
+ ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
check_warn_return(ret, "Error reading WUCSR");
val &= ~(WUCSR_MPEN_ | WUCSR_WAKE_EN_);
- ret = smsc95xx_write_reg(dev, WUCSR, val);
+ ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
check_warn_return(ret, "Error writing WUCSR");
- ret = smsc95xx_read_reg(dev, PM_CTRL, &val);
+ ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
check_warn_return(ret, "Error reading PM_CTRL");
val &= ~(PM_CTL_ED_EN_ | PM_CTL_WOL_EN_);
- ret = smsc95xx_write_reg(dev, PM_CTRL, val);
+ ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
check_warn_return(ret, "Error writing PM_CTRL");
/* enter suspend2 mode */
- ret = smsc95xx_read_reg(dev, PM_CTRL, &val);
+ ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
check_warn_return(ret, "Error reading PM_CTRL");
val &= ~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_);
val |= PM_CTL_SUS_MODE_2;
- ret = smsc95xx_write_reg(dev, PM_CTRL, val);
+ ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
check_warn_return(ret, "Error writing PM_CTRL");
return 0;
}
+ if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) {
+ u32 *filter_mask = kzalloc(32, GFP_KERNEL);
+ u32 command[2];
+ u32 offset[2];
+ u32 crc[4];
+ int i, filter = 0;
+
+ memset(command, 0, sizeof(command));
+ memset(offset, 0, sizeof(offset));
+ memset(crc, 0, sizeof(crc));
+
+ if (pdata->wolopts & WAKE_BCAST) {
+ const u8 bcast[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+ netdev_info(dev->net, "enabling broadcast detection");
+ filter_mask[filter * 4] = 0x003F;
+ filter_mask[filter * 4 + 1] = 0x00;
+ filter_mask[filter * 4 + 2] = 0x00;
+ filter_mask[filter * 4 + 3] = 0x00;
+ command[filter/4] |= 0x05UL << ((filter % 4) * 8);
+ offset[filter/4] |= 0x00 << ((filter % 4) * 8);
+ crc[filter/2] |= smsc_crc(bcast, 6, filter);
+ filter++;
+ }
+
+ if (pdata->wolopts & WAKE_MCAST) {
+ const u8 mcast[] = {0x01, 0x00, 0x5E};
+ netdev_info(dev->net, "enabling multicast detection");
+ filter_mask[filter * 4] = 0x0007;
+ filter_mask[filter * 4 + 1] = 0x00;
+ filter_mask[filter * 4 + 2] = 0x00;
+ filter_mask[filter * 4 + 3] = 0x00;
+ command[filter/4] |= 0x09UL << ((filter % 4) * 8);
+ offset[filter/4] |= 0x00 << ((filter % 4) * 8);
+ crc[filter/2] |= smsc_crc(mcast, 3, filter);
+ filter++;
+ }
+
+ if (pdata->wolopts & WAKE_ARP) {
+ const u8 arp[] = {0x08, 0x06};
+ netdev_info(dev->net, "enabling ARP detection");
+ filter_mask[filter * 4] = 0x0003;
+ filter_mask[filter * 4 + 1] = 0x00;
+ filter_mask[filter * 4 + 2] = 0x00;
+ filter_mask[filter * 4 + 3] = 0x00;
+ command[filter/4] |= 0x05UL << ((filter % 4) * 8);
+ offset[filter/4] |= 0x0C << ((filter % 4) * 8);
+ crc[filter/2] |= smsc_crc(arp, 2, filter);
+ filter++;
+ }
+
+ if (pdata->wolopts & WAKE_UCAST) {
+ netdev_info(dev->net, "enabling unicast detection");
+ filter_mask[filter * 4] = 0x003F;
+ filter_mask[filter * 4 + 1] = 0x00;
+ filter_mask[filter * 4 + 2] = 0x00;
+ filter_mask[filter * 4 + 3] = 0x00;
+ command[filter/4] |= 0x01UL << ((filter % 4) * 8);
+ offset[filter/4] |= 0x00 << ((filter % 4) * 8);
+ crc[filter/2] |= smsc_crc(dev->net->dev_addr, ETH_ALEN, filter);
+ filter++;
+ }
+
+ for (i = 0; i < (pdata->wuff_filter_count * 4); i++) {
+ ret = smsc95xx_write_reg_nopm(dev, WUFF, filter_mask[i]);
+ if (ret < 0)
+ kfree(filter_mask);
+ check_warn_return(ret, "Error writing WUFF");
+ }
+ kfree(filter_mask);
+
+ for (i = 0; i < (pdata->wuff_filter_count / 4); i++) {
+ ret = smsc95xx_write_reg_nopm(dev, WUFF, command[i]);
+ check_warn_return(ret, "Error writing WUFF");
+ }
+
+ for (i = 0; i < (pdata->wuff_filter_count / 4); i++) {
+ ret = smsc95xx_write_reg_nopm(dev, WUFF, offset[i]);
+ check_warn_return(ret, "Error writing WUFF");
+ }
+
+ for (i = 0; i < (pdata->wuff_filter_count / 2); i++) {
+ ret = smsc95xx_write_reg_nopm(dev, WUFF, crc[i]);
+ check_warn_return(ret, "Error writing WUFF");
+ }
+
+ /* clear any pending pattern match packet status */
+ ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
+ check_warn_return(ret, "Error reading WUCSR");
+
+ val |= WUCSR_WUFR_;
+
+ ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
+ check_warn_return(ret, "Error writing WUCSR");
+ }
+
if (pdata->wolopts & WAKE_MAGIC) {
/* clear any pending magic packet status */
- ret = smsc95xx_read_reg(dev, WUCSR, &val);
+ ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
check_warn_return(ret, "Error reading WUCSR");
val |= WUCSR_MPR_;
- ret = smsc95xx_write_reg(dev, WUCSR, val);
+ ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
check_warn_return(ret, "Error writing WUCSR");
}
- /* enable/disable magic packup wake */
- ret = smsc95xx_read_reg(dev, WUCSR, &val);
+ /* enable/disable wakeup sources */
+ ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
check_warn_return(ret, "Error reading WUCSR");
+ if (pdata->wolopts & (WAKE_BCAST | WAKE_MCAST | WAKE_ARP | WAKE_UCAST)) {
+ netdev_info(dev->net, "enabling pattern match wakeup");
+ val |= WUCSR_WAKE_EN_;
+ } else {
+ netdev_info(dev->net, "disabling pattern match wakeup");
+ val &= ~WUCSR_WAKE_EN_;
+ }
+
if (pdata->wolopts & WAKE_MAGIC) {
netdev_info(dev->net, "enabling magic packet wakeup");
val |= WUCSR_MPEN_;
@@ -1133,41 +1230,41 @@ static int smsc95xx_suspend(struct usb_interface *intf, pm_message_t message)
val &= ~WUCSR_MPEN_;
}
- ret = smsc95xx_write_reg(dev, WUCSR, val);
+ ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
check_warn_return(ret, "Error writing WUCSR");
/* enable wol wakeup source */
- ret = smsc95xx_read_reg(dev, PM_CTRL, &val);
+ ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
check_warn_return(ret, "Error reading PM_CTRL");
val |= PM_CTL_WOL_EN_;
- ret = smsc95xx_write_reg(dev, PM_CTRL, val);
+ ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
check_warn_return(ret, "Error writing PM_CTRL");
- /* enable receiver */
- smsc95xx_start_rx_path(dev);
+ /* enable receiver to enable frame reception */
+ smsc95xx_start_rx_path(dev, 1);
/* some wol options are enabled, so enter SUSPEND0 */
netdev_info(dev->net, "entering SUSPEND0 mode");
- ret = smsc95xx_read_reg(dev, PM_CTRL, &val);
+ ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
check_warn_return(ret, "Error reading PM_CTRL");
val &= (~(PM_CTL_SUS_MODE_ | PM_CTL_WUPS_ | PM_CTL_PHY_RST_));
val |= PM_CTL_SUS_MODE_0;
- ret = smsc95xx_write_reg(dev, PM_CTRL, val);
+ ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
check_warn_return(ret, "Error writing PM_CTRL");
/* clear wol status */
val &= ~PM_CTL_WUPS_;
val |= PM_CTL_WUPS_WOL_;
- ret = smsc95xx_write_reg(dev, PM_CTRL, val);
+ ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
check_warn_return(ret, "Error writing PM_CTRL");
/* read back PM_CTRL */
- ret = smsc95xx_read_reg(dev, PM_CTRL, &val);
+ ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
check_warn_return(ret, "Error reading PM_CTRL");
smsc95xx_set_feature(dev, USB_DEVICE_REMOTE_WAKEUP);
@@ -1184,26 +1281,26 @@ static int smsc95xx_resume(struct usb_interface *intf)
BUG_ON(!dev);
- if (pdata->wolopts & WAKE_MAGIC) {
+ if (pdata->wolopts) {
smsc95xx_clear_feature(dev, USB_DEVICE_REMOTE_WAKEUP);
- /* Disable magic packup wake */
- ret = smsc95xx_read_reg(dev, WUCSR, &val);
+ /* clear wake-up sources */
+ ret = smsc95xx_read_reg_nopm(dev, WUCSR, &val);
check_warn_return(ret, "Error reading WUCSR");
- val &= ~WUCSR_MPEN_;
+ val &= ~(WUCSR_WAKE_EN_ | WUCSR_MPEN_);
- ret = smsc95xx_write_reg(dev, WUCSR, val);
+ ret = smsc95xx_write_reg_nopm(dev, WUCSR, val);
check_warn_return(ret, "Error writing WUCSR");
/* clear wake-up status */
- ret = smsc95xx_read_reg(dev, PM_CTRL, &val);
+ ret = smsc95xx_read_reg_nopm(dev, PM_CTRL, &val);
check_warn_return(ret, "Error reading PM_CTRL");
val &= ~PM_CTL_WOL_EN_;
val |= PM_CTL_WUPS_;
- ret = smsc95xx_write_reg(dev, PM_CTRL, val);
+ ret = smsc95xx_write_reg_nopm(dev, PM_CTRL, val);
check_warn_return(ret, "Error writing PM_CTRL");
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-10-05 15:18:03 +0000